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一类受五次扰动的三次平面Hamilton系统中12个极限环的分布(英文) 被引量:3
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作者 洪晓春 施传柱 《曲阜师范大学学报(自然科学版)》 CAS 2004年第2期15-18,共4页
用定性分析和数值判定方法研究了一类三次平面Hamilton系统在 5次扰动下的极限环个数及分布情况 ,得出了该系统有 12个极限环的结论 ,并给出了这 12个极限环的分布情况 .
关键词 五次扰动 平面Hamilton系统 判定函数 极限环 相图
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Artificial perturbation for solving the Korteweg-de Vries equation 被引量:1
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作者 KHELIL N. BENSALAH N. +1 位作者 SAIDI H. ZERARKA A. 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2006年第12期2079-2082,共4页
A perturbation method is introduced in the context of dynamical system for solving the nonlinear Korteweg-de Vries (KdV) equation. Best efficiency is obtained for few perturbative corrections. It is shown that, the qu... A perturbation method is introduced in the context of dynamical system for solving the nonlinear Korteweg-de Vries (KdV) equation. Best efficiency is obtained for few perturbative corrections. It is shown that, the question of convergence of this approach is completely guaranteed here, because a limited number of term included in the series can describe a sufficient exact solution. Comparisons with the solutions of the quintic spline, and finite difference are presented. 展开更多
关键词 PERTURBATION Taylor series Quintic spline Korteweg-de Vries (KdV) equation
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